25 of these giant new type steam locomotive for freight service are being built by the PRR to draw wartime trains of 125 loaded cars at speeds in excess of 50 mph. The new engine develops more power in its working range than any steam locomotive...

"This was a stone and frame building on stone foundations, which was built sometime before 1873. In 1879 a 24 inch "Canadian" turbine was installed which produced 22.8 hp and was able to drive the nine glazing barrels at 20 revolutions per minute....

A 1910 model Buick towers over the low slung XP-300, a "dream" car built by Buick for experimental purposes. The XP-300 is the latest creation of Charles A. Chayne, seated, vice president of General Motors in charge of the engineering staff. He is...

A 'quartz fingernail' is used by DuPont chemists to determine how hard a paint film is. The device measures the weight necessary to drive the rounded end of a quartz rod a given distance into the film. In this manner the exact hardness of the paint...

A 'quartz fingernail' is used by DuPont chemists to determine how hard a paint film is. The device measures the weight necessary to drive the rounded end of a quartz rod a given distance into the film. In this manner the exact hardness of the paint...

About to start on a Liberty Loan flight in one of the special postal planes built by the Standard Aircraft Corporation for the United States Post Office Department. Millions of circulars were dropped by this airplane in the course of the 4th...